6 Jun
2024
6 Jun
'24
12:53 a.m.
Every 9th row breaks the expected pattern (i.e. 99.990 MHz isn't 1E 4E 00 but 66 2B F0). I see the lower 6 bits of F0 increment by 1 but why set the 2nd highest bit? Why toggle bits in F1 as well as setting 4 bits high in F2? Why every 9 rows?
Sorry, I totally skipped over this question, but kinda gave you a hint:
Be careful, some radios will use a variable tuning step stored in the channel such that you might use a multiplier of 6250 if some flag is set.
Looks to me like those are using a 9000 multiplier, possibly signaled by the high bits in the "F2" byte. Perhaps some of those were configured as airband?
--Dan